American
Fire Engine from Americana Suite
Stage Coach from Americana Suite
Clipper Ship from Americana Suite
Suckers State II
Earth Day
Union Pacific
Bent "Blue" [working proof]
Blue [trial proof]
Life Mask
Double Face
, 1966
, 1967
, 1968
![Bent "Blue" [working proof]](https://api.nga.gov/iiif/25190e59-6ffb-4652-ab02-8434c9babb59/full/843,/0/default.jpg)
![Blue [trial proof]](https://api.nga.gov/iiif/b0a12e73-2e97-46f7-ad6c-712298abcae1/full/843,/0/default.jpg)
![Figure 3 [trial proof]](https://api.nga.gov/iiif/f30be980-23db-49ee-8523-bc5751b7742c/full/843,/0/default.jpg)
![Figure 8 [trial proof 3]](https://api.nga.gov/iiif/529730ec-65c0-47b6-9490-ebe6bab38d82/full/843,/0/default.jpg)
![Figure 7 [working proof]](https://api.nga.gov/iiif/6c0a537e-66ff-48ef-8b3c-04f8642b8dd9/full/843,/0/default.jpg)
![Gray Alphabets [working proof]](https://api.nga.gov/iiif/c7d881b5-8fca-4146-b30c-5820b30cbccc/full/843,/0/default.jpg)
![Figure 2 [trial proof]](https://api.nga.gov/iiif/930cf5fa-7d8d-41e4-bbec-72c789f21af1/full/843,/0/default.jpg)
![Figure 8 [trial proof 2]](https://api.nga.gov/iiif/76aa8056-2a81-4f8a-a52c-61ebea9e56c0/full/843,/0/default.jpg)
![Figure 7 [trial proof]](https://api.nga.gov/iiif/f3771b79-765f-4336-addb-4c11704fc68d/full/843,/0/default.jpg)
